<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>添加删除记录练习</title>
<link rel="stylesheet" type="text/css" href="ex_2_style/css.css" />
<script type="text/javascript">

	function removeTr(){
		var trNode = this.parentNode.parentNode;
		var tds = trNode.getElementsByTagName("td");
		var nameStr = tds[0].firstChild.nodeValue;
		var flag = confirm("真的要删除" + nameStr + "的信息吗？");
		if(flag){
			trNode.parentNode.removeChild(trNode);
		}
		
		return false;
	}

	window.onload = function(){
		//目标1：点击Delete删除记录
		var aEles = document.getElementsByTagName("a");
		for(var i = 0;i < aEles.length;i++){
			aEles[i].onclick = removeTr;
		}
		
		//目标2：点击Submit增加记录
		var subBtn = document.getElementById("addEmpButton");
		subBtn.onclick = function(){
			var nameText = trim(document.getElementById("empName").value);
			var emailText = trim(document.getElementById("email").value);
			var salaryText = trim(document.getElementById("salary").value);
			
			document.getElementById("empName").value = nameText;
			document.getElementById("email").value = emailText;
			document.getElementById("salary").value = salaryText;
			
			if(nameText == "" || emailText == "" || salaryText == ""){
				alert("您输入的内容不完整");
				return ;
			}
			
			//组装节点
			var nameTd = document.createElement("td");
			nameTd.appendChild(document.createTextNode(nameText));
			var emailTd = document.createElement("td");
			emailTd.appendChild(document.createTextNode(emailText));
			var salaryTd = document.createElement("td");
			salaryTd.appendChild(document.createTextNode(salaryText));
			var aTd = document.createElement("td");
			var aNewEle = document.createElement("a");
			aNewEle.href = "deleteEmp?id=XXX";
			aNewEle.appendChild(document.createTextNode("Delete"));
			aNewEle.onclick = removeTr;
			aTd.appendChild(aNewEle);
			
			var trNode = document.createElement("tr");
			trNode.appendChild(nameTd);
			trNode.appendChild(emailTd);
			trNode.appendChild(salaryTd);
			trNode.appendChild(aTd);
			
			var empTable = document.getElementById("employeeTable");
			empTable.appendChild(trNode);
		}
		
		function trim(str){
			var reg = /^\s*|\s*$/g;
			return str.replace(reg,"");
		}
		
	}
</script>
</head>
<body>

	<table id="employeeTable">
		<tr>
			<th>Name</th>
			<th>Email</th>
			<th>Salary</th>
			<th>&nbsp;</th>
		</tr>
		<tr>
			<td>Tom</td>
			<td>tom@tom.com</td>
			<td>5000</td>
			<td><a href="deleteEmp?id=001">Delete</a></td>
		</tr>
		<tr>
			<td>Jerry</td>
			<td>jerry@sohu.com</td>
			<td>8000</td>
			<td><a href="deleteEmp?id=002">Delete</a></td>
		</tr>
		<tr>
			<td>Bob</td>
			<td>bob@tom.com</td>
			<td>10000</td>
			<td><a href="deleteEmp?id=003">Delete</a></td>
		</tr>
	</table>

	<div id="formDiv">
	
		<h4>添加新员工</h4>

		<table>
			<tr>
				<td class="word">name: </td>
				<td class="inp">
					<input type="text" name="empName" id="empName" />
				</td>
			</tr>
			<tr>
				<td class="word">email: </td>
				<td class="inp">
					<input type="text" name="email" id="email" />
				</td>
			</tr>
			<tr>
				<td class="word">salary: </td>
				<td class="inp">
					<input type="text" name="salary" id="salary" />
				</td>
			</tr>
			<tr>
				<td colspan="2" align="center">
					<button id="addEmpButton" value="abc">
						Submit
					</button>
				</td>
			</tr>
		</table>

	</div>

</body>
</html>
